$ git clone -n https://src.fedoraproject.org/rpms/mod_proxy_cluster.git /var/lib/mock/f45-build-19074-540/root/chroot_tmpdir/scmroot/mod_proxy_cluster
Cloning into '/var/lib/mock/f45-build-19074-540/root/chroot_tmpdir/scmroot/mod_proxy_cluster'...
$ git fetch origin 06faee135d517338a05ea36c2537133cc5b78cfd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mod_proxy_cluster
 * [new ref]         06faee135d517338a05ea36c2537133cc5b78cfd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 06faee1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild